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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: DeleteListener.html 5 2014-04-10 18:55:47Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.core;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>/**<a name="line.10"></a>
<span class="sourceLineNo">011</span> * Listener interface for notifications that an object is about to be deleted.<a name="line.11"></a>
<span class="sourceLineNo">012</span> *<a name="line.12"></a>
<span class="sourceLineNo">013</span> * @see Transaction#addDeleteListener Transaction.addDeleteListener()<a name="line.13"></a>
<span class="sourceLineNo">014</span> */<a name="line.14"></a>
<span class="sourceLineNo">015</span>public interface DeleteListener {<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>    /**<a name="line.17"></a>
<span class="sourceLineNo">018</span>     * Receive notification of an object being deleted.<a name="line.18"></a>
<span class="sourceLineNo">019</span>     *<a name="line.19"></a>
<span class="sourceLineNo">020</span>     * &lt;p&gt;<a name="line.20"></a>
<span class="sourceLineNo">021</span>     * Notifications are delivered in the same thread that is deleting object, before the delete actually occurs.<a name="line.21"></a>
<span class="sourceLineNo">022</span>     * At most one notification will be delivered for any object, even if {@link Transaction#delete Transaction.delete()}<a name="line.22"></a>
<span class="sourceLineNo">023</span>     * is invoked reentrantly from within this listener.<a name="line.23"></a>
<span class="sourceLineNo">024</span>     * &lt;/p&gt;<a name="line.24"></a>
<span class="sourceLineNo">025</span>     *<a name="line.25"></a>
<span class="sourceLineNo">026</span>     * @param tx associated transaction<a name="line.26"></a>
<span class="sourceLineNo">027</span>     * @param id the ID of the object about to be deleted<a name="line.27"></a>
<span class="sourceLineNo">028</span>     */<a name="line.28"></a>
<span class="sourceLineNo">029</span>    void onDelete(Transaction tx, ObjId id);<a name="line.29"></a>
<span class="sourceLineNo">030</span>}<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>




























































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